



const conBtn = document.querySelector('.submit');

conBtn.onclick = function(){
    const tll = document.querySelector('.textbox').value;
    const cll = document.querySelector('.password').value;

    if(tll === ""){
        alert('账号不能为空');
    }
    else if(cll === ""){
        alert('密码不能为空');
    }
    // alert(1);
}
